Considerations

Note the following facts:

• The order of the pattern lines is important because the first matching pattern line is used to build the return code value.
• Empty pattern strings (“”) are ignored by the pattern matching procedure.

For example, the following is a valid pattern sequence. The first line is more restrictive than the second line.

“625” “User * missing” = 104
“” “User * missing” = 102

The following pattern sequence is formally valid, but the second pattern line is never used. Because the first line is more general, it is always matched first.

“” “User * missing” = 102
“625” “User * missing” = 104